Description The Firefield 30mm fixed mount is a cantilever mount constructed of durable 6061-T6 aluminum. As a cantilever mount, this unit is designed to be used with rifles with high recoil cartridges, since they provide extra clearance between the shooter&';s eye and the rear of the scope, allowing for a comfortable and safe eye relief distance. By extending the scope forward over the rifle&';s action, the Firefield 30mm fixed mount may help shooters achieve better balance and a more natural shooting position. This is good for scopes with large objective lenses. Included in Package Hex key Features Made from durable 6061-T6 aluminum Matte black, no reflective finish 47mm/1.85in forward offset Fixed mount design Fit 30mm riflescope tubes EXPORT CONTROL NOTICE: This product is controlled for export and in-country transfer under the Export Administration Regulations (EAR). division contrary to U.S. law prohibited. Specifications Mount type Picatinny Ring diameter 30mm Material Aluminum 6061-T6 Centerline height (in/mm) 1.5in / 38.1mm Torque spec for mount hex nut (in-lbs) 30 - 35 in - lbs Torque spec for torx scope rings (in-lbs) 16 - 18 in - lbs Dimensions (in/mm) 5.132x2.034x2.515in / 130.34x51.66x63.87mmn Weight, (oz/g) 4.9oz / 139g